Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ca37a14a72ec6a…

MALICIOUS

PDF

37.9 KB Created: 2020-03-20 02:31:44 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ab0596d0b6c4b21732830a2c602a6b5d SHA-1: 3d5d937fe9506b06d55ceadaffa115a62c6d98ca SHA-256: 42ca37a14a72ec6a1cb7c74d77183bf092d0c00a073b50ccc090ad732aa58345
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection to malicious content. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains text related to calendar history and the wkhtmltopdf tool, which is likely a lure to disguise the malicious intent of hosting numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://bekinsteam.com/uploads/1/3/0/9/130968921/130968921.html#historia+del+calendario+gregoriano+y+juliano
    • http://avaliamenu.com/uploads/1/3/0/7/130775657/8900778.pdf
    • http://shawwildlifesolutions.com/uploads/1/3/0/6/130621569/200cf.pdf
    • http://www.connecticutflyboard.com/uploads/1/3/0/3/130323422/gidowerem.pdf
    • http://ocmunc.com/uploads/1/3/0/2/130270990/975027.pdf
    • http://reusegifts.com/uploads/1/3/0/7/130775382/f054f7fea9e4bc0.pdf
    • http://vassilopouloslab.com/uploads/1/3/0/4/130488085/muzebisixo.pdf
    • http://g10z.com/uploads/1/3/0/5/130539888/5047249.pdf
    • http://www.confidentialhealthcoaching.com/uploads/1/3/0/2/130272918/vifunepukamu-ruwal-vuwedasetonej.pdf
    • http://relief-at-hand.com/uploads/1/3/0/6/130604756/riterexoxatofigag.pdf
    • http://inspire.thefirstgenlounge.com/uploads/1/3/0/5/130543025/0d3bcd.pdf
    • http://arizonazen.com/uploads/1/3/0/2/130271058/8218967.pdf
    • http://theheartdiseasediva.com/uploads/1/3/0/6/130604388/15c7cb42ad.pdf
    • http://el043.elrepco.com/uploads/1/3/0/2/130270971/9ce7b325e.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006821.bin
9fa31a039962bb76caad9a068f160b2af0388f8417e464033e300cde2445d8a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6821 8932 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.